// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////

package com.google.crypto.tink;

import java.security.GeneralSecurityException;

/**
 * A catalogue of {@link KeyManager} objects.
 *
 * <p>It is basically a map from a (key type, primitive name)-tuple to {@link KeyManager}-objects,
 * that determines the implementation that handles the keys of the given key type.
 *
 * <p>Tink includes default per-primitive catalogues, but it also supports custom catalogues to
 * enable user-defined configuration of run-time environment via {@link Registry}.
 *
 * <p>The template parameter {@code P} denotes the primitive corresponding to the {@link KeyManager}
 * handled by this catalogue.
 *
 * @since 1.0.0
 */
public interface Catalogue<P> {
  /**
   * @return a {@link KeyManager} for the given {@code typeUrl}, {@code primitiveName}, and version
   *     at least {@code minVersion} (if it exists in the catalogue).
   */
  public KeyManager<P> getKeyManager(String typeUrl, String primitiveName, int minVersion)
      throws GeneralSecurityException;
}
